Neutron and Secondary Gamma-Ray Induced Heat in the Ground Due to Point 12.2-15-MeV and Fission Sources at an Altitude of 50 Feet,
Abstract
The energy deposited in ground due to neutrons and the secondary gamma rays has been determined as a function of range, ground depth, and time from an instantaneous point neutron source with either a fission spectrum or a 12.2- to 15-MeV energy band. In all cases, the source was at a height of 50 feet above the air/ground interface. Discrete ordinates and Monte Carlo calculations illustrated that there is a significant effect on the energy deposited due to source energy distribution, but little effect due to small differences in ground composition. The importance of gamma rays produced by low-energy neutrons was found to be small for the 12.2- to 15-MeV source, but large for the fission source. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1970
- Accession Number
- AD0715020
Entities
People
- E. A. Straker
- M. B. Emmett
- M. L. Gritzner
Organizations
- Oak Ridge National Laboratory